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  • Garret schneider

    April 5, 2020 at 10:01 pm

    What’s the grade level, and what’s the math that you would classify as “mental”?

  • Lisa Hudson

    April 11, 2020 at 12:24 am

    I agree with Garret. It would depend on the age, etc. If you are looking for math thinking puzzles, you might try They have various types of puzzles on their site. I use the mobiles with my middle schoolers.